Thomas a



T. A. DAVIES.

Clock.

Patented Aug. 12, 1846.

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UNITED STATES PATENT OFFICE.

THOMAS A. DAVIES, OF NEW YORK, N. Y.

CLOCK.

Specification of Letters Patent No. 4,687, dated August 12, 1846.

To all whom it may concern Be it known that I, THOMAS A. DAvIEs, of thecity, county, and State of New York, have invented a new and ImprovedMode of Constructing the Striking Parts of Clocks; and I hereby declarethe following to be a description of the same.

The nature of my invention consists in making a register to be put uponthe hour socket of a clock, also connecting this regis ter with stopsupon the strike wheel by means of two arms working upon a center, alsoin placing new stops upon the strike wheel and in new combinations inthe striking part.

Descriptz'0n.-The drawings are not made with reference to showing allthe working parts of a clock complete; but merely such parts as arenecessary to illustrate the new principles as the other parts would onlyserve to confuse. (See drawing.) Let R be the center of the hour andminute shafts. V the center of the strike wheel. S the center of thelifting shaft. Y the center of the fly wheel shaft. U the center of thegear wheel shaft from the strike wheel to the fly. M, P, the strike wirewhich plays upon 13 pins in the circumference of the strike wheel. L Othe hammer spring. N the wire carrying the hammer which strikes thebell. T K the fly. S G the arm to stop the fly and raise the connectingrod H, J. S, F, (bent wire) the means by which the lifting part israised by the bent wire R, W. a, a, the register. 1, 2, 3, 4 5 6, 7 8 910 11 12 being indentures each one answering for an hour except theindentures marked 5, 6, 7 which answers for 3 hours,

- (Z (Z. G E arms upon a center shaft 2, one

leading to the register, the other to pins 01', stops marked 12, (1.11)(2.10), (3, 9), (4, 8), (57 and 6 upon the strike wheel. The end of thearm (1, d, made as is represented at A B turned toward the wheel andmade a little hollowing so as to catch the pins more firmly, 1, 2, 3, 4,5, 6, 7, 8, 9, 10, 11, 12, 13, being pins against which the strike wireM, P, plays. Now suppose the clock in operation and the center shaftconnected in the usual way with the time works. We will also supposethat the hook on the end of the arm (1 d has just left the stop pin 12,and that the end of the arm of the lever C, E, has left the space on theregister marked 12, and that the lifting rods and works are all in theposition represented in the drawing. The register being firmly attachedto the hour socket will of course travel with it, and when the registerwill have so far progressed that the lift wire S F falls from the bentwire R, W, the arm (Z, (Z, will fall at the same moment and carry theend E of the lever C, E, onto the division on the register marked 1 andthe end of the arm d cl will fall into such a position as that it willcatch a pin in the strike wheel marked (1, 11). The fly when the liftwires drop will be liberated and striking parts commence to move and ofcourse the pin on the opposite side of the strike wheel at 3 will catchthe arm M P and cause one blow upon the bell with the hammer. But beforeanother strike pin comes to the arm M P the further progress of thewheel is stoppedby the pin (1, 11) catching the end of the lever d, cl,so that in this position the clock strikes one. Let the works againprogress in a short time the bent wire on the center shaft will begin toraise the lifting parts and at the moment the arm at, d, is raised fromthe pin (1, 11) the wire S, G, comes within range of the stop on the flywheel and the clock is prevented from striking till the end of the hourwhen the lifting parts again fall and the end of the arm C, E, falls onthe division marked 2 on the register and the end of the lever (Z d intothe next outward consecutive circle and the clock will strike two in thesame way as before and stop upon the pin marked (2, 10). The same for 3,4, and 5. It now strikes 6 and 7 upon the same circle that it struck 5upon and then commences its course back toward the center of the strikewheel striking alternately 8, 9, 10 and 11 upon the same pins and uponthe same circles upon which it struck 4, 3, 2, and 1. It strikes 12 inthe same way by passing from 11 to 12 on the register and stop pins.There are here de; scribed seven pins or stops arranged in sixconsecutive circles and it is entirely conventional upon which of thecircles the pins are placed provided always that the register is made tocorrespond and that the pins 6 and (7, 5) are on the same circle. Thesame ob-. ject can be accomplished with any number of pins or stops onthe strike wheel from 7 to 12. In case 12 wire used arranged in 12consecutive circles upon the strike wheel and placed regularly from into out or from out to in the register would assume the form of thecommon snail but of course applied for different objects and to servedifi'erent ends. The same end could be accomplished by having a separatewheel upon the strike wheel shaft or arms to run from the strike wheelshaft to hold the stops.

What I claim as new and original and desire to secure by Letters Patentis- 1. Applying to the hour socket of a clock a register made as abovedescribed for the purpose of counting off as the hours go around tostops upon the strike wheel or to stops arranged upon the strike wheelshaft.

2. I also claim the application of two 'arms from a center shaftessentially as above described the end of one of which strikes upon aregister as above described guiding the end of the other to stops uponthe strike wheel or to stops arranged upon the strike wheel shaft.

3. I also claim the new mode of stopping the striking parts of a clockby means of pins or stops arranged upon the strike wheel or upon stopsarranged upon the strike wheel shaft, essentially as above described.

4. I also claim the combination in a clock of the lifting part, thestops arranged as above described, the two arms form a center for theobjects above described, and the register made and applied as abovedescribe all together or any two together.

THOS. A. DAVIES.

Witnesses:

RANsoM BLAKESLEE, Jr., HENRY D. CLARK.

